You are free to act, assuming you play the bandaged gangster.
As far as suggestions go:
Don Capella is in stabilized condition in the mansion you are in. His "empire" is what paid for your bullet removal, your job, your women, your car.
You owe the man.
How would you react?
1. Stay there and supervise the mooks guarding the place? They did slip up and let a sniper almost kill the man.
2. Investigate the shooting? talk to the mooks in the house that day? Watch security camera tapes, etc. Call people. Find/call contacts in police, records, other guys around town who have heard something.
3. Come up with your own game plan. Remember, you guys answer to Roman while Capella is unconscious. Check anything big with him.